Precious stone



FIG. 1 is a left perspective view of a presious stone;

FIG. 2 is a rear perspective view of the precious stone;

FIG. 3 is a right perspective view of the precious stone;

FIG. 4 is a rear view of the precious stone;

FIG. 5 is a top view of the precious stone;

FIG. 6 is a right side view of the precious stone; and,

FIG. 7 is a left side view of the precious stone. 

The ornamental design for a precious stone, as shown and described. 